炔丙基

For example,the addition reaction with small molecular,the metathetical reaction with alkynes and Wittig reaction to prepare high-valent transtion-metal allenylidene complexes.

对于化合物11，详细研究了其与小分子加成反应、炔烃复分解反应以及通过Wittig反应制备高价态过渡金属丙二烯基卡宾化合物。

Some products included methoxy group, naphthyl and heterocyclic aromatic moieties, and some were borne with two 1-propynyl groups. It is more important that compounds bearing halogens were also synthesized via this protocol.

运用此法不仅合成出一些含有醚键、萘环、杂环以及含有两个1-丙炔基的化合物，重要的是芳环上含有卤原子的化合物也能顺利地合成出来。

From the starting material: propargyl alcohol, the building block was prepared easily by Jones oxidation, esterfication, bromination and selective trifluoromethylation.

第一部分：从丙炔醇出发，经过Jones氧化，甲酯化，顺式二溴化，再选择性地在酯基的β位实现三氟甲基化，合成了目标含氟砌块。

This thesis mainly focuses on overcoming the substrates limition of the present catalytic systems,low catalytic efficiency,and application in total synthesis.1.Conveniently synthesized sulfonamide alcohol titanium complex has been used to catalyze the asymmetric addtition of methyl propiolate to various aromatic and aliphatic aldehydes with high enantioselectivity.

本论文即针对现有催化体系的底物局限性、催化效率低、应用研究少等展开研究：1、我们将简便合成的磺酰胺基醇配体-钛催化体系应用于催化丙炔酸甲酯对各类芳香醛及脂肪醛的不对称加成取得了理想的结果。

In order to discuss the regioselectivity of nitrile oxide 1,3-dipolar cycloaddition to propyne , 1,3-dipolar cycloaddition reaction of substituted nitrile oxide (RCNO, R=F, NO2, OCH3, OH, COOCH3, CHO, CONH2, H, CH3) with propyne was studied using density functional theory at the 6-311++G** level, and the reaction rates were calculated at different temperature from 200 to 400 K.

用密度泛函B3LYP/6-311++G**方法研究了氧化腈(RCNO，R=F，NO2，OCH3，OH，COOCH3，CHO，CONH2，H，CH3)与丙炔的1，3-偶极环加成反应，并且计算了不同温度下的反应速率常数，讨论了氧化腈上不同取代基R的取代效应和温度对反应区域选择性的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。